Hot and cold

Is it normal during pregnancy to feel hot AND COLD? I was on an antibiotic for the past 4 days , finished the 5 pill today. But I went to a dr appointment I had scheduled months back and they took my vitals and I had a temp of 99.2

Now. I didnt really know if my temp readings at home the past few days were accurate because the oral thermometer would read a temp in under 15 seconds. And it always read 98.6 etc.

maybe I'm wrong. But I think an accurate reading would take at least 30 seconds..

I am 6 weeks 1 day today.